docs: def pin_command(self):
          """Compose pip-compile shell command"""
          parts = [
              'pip-compile',
              '--no-header',
              '--verbose',
              '--rebuild',
              '--no-index',
              '--output-file', self.outfile,
              self.infile,
          ]
          if OPTIONS['upgrade']:
              parts.insert(3, '--upgrade')
          if self.add_hashes:
              parts.insert(1, '--generate-hashes')
          return parts